Substance abuse among the youth is a critical topic that requires research to aid in developing social service strategies. For sampling, each district's youth and neighborhood members would be chosen using stratified sampling. Each group serves as a representation of the county's overall population. This would allow the researcher to approach each group uniquely. A straightforward random sampling procedure would then be used to choose homes in each district and local residents. This method will involve writing the names of various households and addresses on cards, and placing them in a jar. The required name is then selected from the jar of cards. This would make it possible to choose a sample size representative of the population.

The size of an adequate sample is also determined by the population's commonalities and contrasts. Because the community for the framework being evaluated is pretty varied, a larger sample will most likely be needed to generate a representative sample. Additionally, since the state's population is more than 5,000, the sample size should be about 8%. It will ensure an adequate representation of the youth in the sample as they are the target population for the study.

Sample size can be affected by budget issues and the sampling design. It also extends to diversity in the sample, as the experiment requires an adequate representation of all genders in the sample size. The non-responsiveness of the population should also be considered because a large sample will be required to research the topic. It would also be essential to offer clear instructions and offering incentives to increase people's participation in the research. It also determines an appropriate study design and the data collection method. Other significant factors include resources available and time to undertake the research.

How might we narrow the overall population so that we can narrow our sample a bit? Region? Age group?